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Minimally toxic to humans and known for its antibiotic properties, silver has historically been used in a variety of medical and industrial applications. However, prolonged exposure to silver can result in argyria, a permanent slate-gray or bluish discoloration of the skin, mucous membranes, and internal organs. Though the condition is not harmful, it is irreversible and, in some cases, very noticeable. What American politician took on a bluish tint after consuming a homemade silver concoction? More… Discuss